SpritesMind.Net

AFAIK PORT accesses are not doing anything in MD mode.

VDP_waitVSync(); colorCyclePressStart(colorCycleTimer++); All that other function do is a few VDP_setPaletteColor. I get CRAM dots somewhere around line 192...what's up with that? Uninformed guess (since I don't know if you are using interrupts): You wait for vsync, vblank flag gets set, VDP_waitVS...

If your build process keeps the elf file you can do "addr2line -e yourgame.elf 42c0" to find the line of code, or you can look up the address in the map file. Not sure if SGDK produces those, I use custom makefiles for my stuff.

mix256 wrote: ↑

Mon Feb 05, 2018 2:08 pm

Yeah, want to go the "non-soldering" route, if I can. Because I really suck at it and is close to blind...or something.
Is running through the internet for PCB suppliers now, so far I've got these:

*shameless plug*
viewtopic.php?f=21&t=2635

Chilly Willy wrote: ↑

Sun Nov 05, 2017 5:50 pm

EDIT2: The current NeoMyth menu mirrors rom data to make certain games work that expect mirroring.

Could you share an example of such a game?
I'm not aware of any games that are relying on mirroring.

I don't remember if this has been reported, but if you read the vcounter at the moment it's changing (presumably?), you'll get a corrupted value. Usually bit1 is set when it shouldn't be, at least on my VA6 MD1. It's very rare, but if you do reads in a tight loop, you'll get up to several bad reads ...

Small update to flamewing's test to trigger a bug in Genesis-Plus-GX at least:
https://github.com/flamewing/68k-bcd-ve ... e3afd720bf
http://notaz.gp2x.de/md/rel/bcd-verifier-u1.zip

r57shell wrote: ↑

Wed Sep 13, 2017 3:09 pm

Here is test new version: http://www.mediafire.com/file/jl2227tc4 ... s_test.bin
Tell me if it fails or success.

It's fine now on MED but on raw flashcart it still black screens ~80% of the time.

I'd say there is no benefit of handling warm boot differently in a test like this, unless you want to also test effects of reset.

Yes it's a proper German MD1: http://notaz.gp2x.de/img/hw/megadrive_model1.jpg Note that I also have MegaCD + 32X attached, I know those have effect on open bus at least. The purple screen is on a Mega Everdrive v1, consistently getting it every time on the same spot. I haven't seen any other proble...

The purple screen means failure, right?
This is what I get on my PAL MD with Hitachi 68k:
http://notaz.gp2x.de/img/mess/megadrive ... _sizes.jpg

themrcul wrote:With the custom cart you are developing, I assume it will have save capability in it? And what is the largest ROM size you are targeting? (hopefully 4MB will be enough for this project).

Yes, 4MB with saves is the goal.

In support of homebrew development, dragonbox.de is announcing cartridge production service. Edit: you can now order samples easily here: https://www.dragonbox.de/en/195-homebrew-production The set includes: the PCB (custom 4MiB, SRAM and "plain" versions available) plastic shell for the PCB (black ...

MD1 VA6 TMSS with all addons here, but not much time, so could run your (or anyone's) stuff once a week or so...
You may want to try sega-16 or everdrive forums to find someone more dedicated.